<template>
  <div>
       <!-- mianbaoxie -->
       <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>


    <!-- 卡片区域 -->
    <el-card>
        <!-- 提示文案 -->
        <el-alert
    title="添加商品信息"
    type="info"
    center
    show-icon 
    :closable="false">
  </el-alert>


  <!-- 步骤条区域 -->
  <el-steps :space="200" :active="activeIndex-0" finish-status="success" align-center>
  <el-step title="基本信息"></el-step>
  <el-step title="商品参数"></el-step>
  <el-step title="商品属性"></el-step>
  <el-step title="商品图片"></el-step>
  <el-step title="商品内容"></el-step>
  <el-step title="完成"></el-step>


<!-- tab栏 -->
</el-steps>
<el-form :model="addFrom" :rules="addFromRules" ref="addFromRef" label-width="100px" label-position="top">
<el-tabs v-model="activeIndex" :tab-position="'left'" :before-leave="beforeTabLeave" @tab-click="tabClicked">
    <el-tab-pane label="基本信息" name="0">
      <el-form-item label="商品名称" prop="goods_name">
    <el-input v-model="addFrom.goods_name"></el-input>
  </el-form-item>
  <el-form-item label="商品价格" prop="goods_price">
    <el-input v-model="addFrom.goods_price" type="number"></el-input>
  </el-form-item>
  <el-form-item label="商品重量" prop="goods_weight">
    <el-input v-model="addFrom.goods_weight"  type="number"></el-input>
  </el-form-item>
  <el-form-item label="商品数量" prop="goods_number">
    <el-input v-model="addFrom.goods_number"  type="number"></el-input>
  </el-form-item>
  <el-form-item label="商品分类" prop="goods_cat">
    <el-cascader
    expandTrigger="hover"
    v-model="addFrom.goods_cat"
    :options="catelist"
    :props="cateProps"
    @change="handleChange"></el-cascader>
  </el-form-item>
    </el-tab-pane>
    <el-tab-pane label="商品参数" name="1">
      <!-- 渲染表单的item项 -->
      <el-form-item :label="item.attr_name" v-for="item in manyTableData" :key="item.attr_id">
            <!-- 复选框组 -->
      <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox :label="cb" v-for="(cb, i) in item.attr_vals" :key="i" border></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
    </el-tab-pane>
    <el-tab-pane label="商品属性" name="2">
       <!-- 渲染表单的item项 -->
       <el-form-item :label="item.attr_name" v-for="item in onlyTableData" :key="item.attr_id">
          <el-input v-model="item.attr_vals"> </el-input>
            </el-form-item>
    </el-tab-pane>
    <el-tab-pane label="商品图片" name="3">
      <el-upload
  :action="uploadURL"
  :on-preview="handlePreview"
  :on-remove="handleRemove"
  list-type="picture"
  :headers="headerObj"
  :on-success="headleSuccess">
  <el-button size="small" type="primary">点击上传</el-button>
  <div slot="tip" class="el-upload__tip">只能上传jpg/png文件，且不超过500kb</div>
</el-upload>
    </el-tab-pane>
    <el-tab-pane label="商品内容" name="4">
      <!-- 富文本组件 -->
      <quill-editor v-model="addFrom.goods_introduce" class=" .ql-editor"></quill-editor>

      <el-button type="primary" class="btnAdd" @click="add">添加商品</el-button>
    </el-tab-pane>
  </el-tabs>
</el-form>
    </el-card>

    <!-- 图片预览 -->
    <el-dialog
  title="图片预览"
  :visible.sync="preViewVisible"
  width="50%">
 <img :src="preViewPath" class="previewImg">
</el-dialog>
  </div>
</template>

<script>
import _ from 'lodash'
export default {
    data(){
        return{
        activeIndex:'0',
        //添加商品的表单数据对象
        addFrom:{
          goods_name:'',
          goods_price:'',
          goods_weight:'',
          goods_number:'',
          goods_cat:[],
          //图片的数组
          pics:[],
          //商品详情描述
          goods_introduce:'',
          attrs:[]
        },
        addFromRules:{
          goods_name:[
          {
            required:true ,message:'请输入商品名称',trigger:'blur'
          }
          ],
          goods_price:[
          {
            required:true ,message:'请输入商品价格',trigger:'blur'
          }
          ],
          goods_weight:[
          {
            required:true ,message:'请输入商品重量',trigger:'blur'
          }
          ],
          goods_number:[
          {
            required:true ,message:'请输入商品数量',trigger:'blur'
          }
          ],
          goods_cat:[
          {
            required:true ,message:'请选则商品分类',trigger:'blur'
          }
          ],
        },
        //商品分类列表
        catelist:[],
        cateProps:{
          label:'cat_name',
          value:'cat_id',
          children:'children',
        },
        //动态参数列表数据
        manyTableData:[],
        //静态属性的数据
        onlyTableData:[],
        //上传图片的俩地址
        uploadURL:'http://127.0.0.1:8888/api/private/v1/upload',

        //header请求头对象
        headerObj:{
          Authorization: window.sessionStorage.getItem('token')
        },
        preViewPath:'',
        preViewVisible:false
        }

    },
    created(){
      this.getCateList()
    },
    methods:{
      //获取所有商品分类数据框
     async getCateList(){
      const{data:res}= await this.$http.get('categories')

      if(res.meta.status !==200){
        return this.$message.error('获取商品分类数据失败')
      }
      this.catelist =res.data
      console.log(this.catelist)
      },

      //级联选择器选中项变化，会触发这函数
      handleChange(){
        console.log(this.addFrom.goods_cat)
        if(this.addFrom.goods_cat.length !==3){
          this.addFrom.goods_cat =[]
        }
      },
      beforeTabLeave(activeName, oldActiveName){
        // console.log('即将离开的标签页的名字是'+oldActiveName)
        // console.log('即将进入的标签页的名字是'+activeName)

        if(oldActiveName==='0' && this.addFrom.goods_cat.length!==3){
          this.$message.error('请先选择商品分类！')
          return false
        }
      },
     async tabClicked(){
        // console.log(this.activeIndex)
        //访问动态参数面板
          // console.log('动态参数面板')
          //证明访问的是动态参数
          if (this.activeIndex === '1') {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: 'many' }
          }
        )

        if (res.meta.status !== 200) {
          return this.$message.error('获取动态参数列表失败！')
        }

        console.log(res.data)
        res.data.forEach(item => {
          item.attr_vals =
            item.attr_vals.length === 0 ? [] : item.attr_vals.split(' ')
        })
        this.manyTableData = res.data
          }else if(this.activeIndex=='2'){
          const{data:res}=await  this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: 'only' }
          })

          
        if (res.meta.status !== 200) {
          return this.$message.error('获取静态属性列表失败！')
        }

        console.log(res.data)
        this.onlyTableData = res.data
          }
        
      },
      //处理图片的预览效果
      handlePreview(file){
        console.log(file)
        this.preViewPath=file.response.data.url
        this.preViewVisible=true
      },
      //删除图片的效果
      handleRemove(file){
        const filePath =file.response.data.tmp_path

        const i =this.addFrom.pics.findIndex(x=>x.pic===filePath)

        this.addFrom.pics.splice(i,1)
        console.log(this.addFrom)
      },

      headleSuccess(response){
        //图片上传成功
        console.log(response)

        //拼接得到一个图片信息对象
        const picInfo ={pic:response.data.tmp_path}
        //将图片push到数组中
        this.addFrom.pics.push(picInfo)
        console.log(this.addFrom)
},
  //添加商品
  add(){
    this.$refs.addFromRef.validate(async valid=>{
      console.log(valid,'valid');
      if(!valid){
        return this.$message.error('请填写必要的表单项!')
      }

      //执行添加的业务逻辑
     const form =  _.cloneDeep(this.addFrom)
      form.goods_cat = form.goods_cat.join(',')
      //处理动态参数
      this.manyTableData.forEach(item=>{
        const newInfo ={attr_id:item.attr_id,attr_value:item.attr_vals.join(' ')}
        this.addFrom.attrs.push(newInfo)
      })
      //处理静态属性
      this.onlyTableData.forEach(item=>{
        const newInfo ={attr_id:item.attr_id,attr_value:item.attr_vals}
        this.addFrom.attrs.push(newInfo)
      })
      form.attrs=this.addFrom.attrs
      console.log(form)


      //发起请求添加商品
      //商品的名称必须是唯一的
     const{data:res}=await this.$http.post('goods',form)
      if(res.meta.status !==201){
        return this.$message.error('添加商品失败')
      }

      this.$message.success('添加商品成功')
      this.$router.push('/goods')
    })
  }
    },
    computed:{
      cateId(){
        if(this.addFrom.goods_cat.length ===3){
          return this.addFrom.goods_cat[2]
        }
        return null
      }
    }
}
</script>

<style lang="less" scoped>
 .el-checkbox{
  margin:0 5px 0 0 !important
 }
 .previewImg{
  width: 100%;
 }

 .btnAdd{
  margin-top: 15px;
 }
</style>